Choke convertor



March 13, 1956 E, O. PLOCKELMAN CHOKE CONVERTOR Filed Oct. 20, 1951 INVEN TOR.

United States Patenc CHOKE CONMERTOR Emil 0. Plockelman, Whitefish Bay,Wis.

Application October 20, 1951, Serial No. 252,359

3 Claims. (Cl. 74-501) This invention relates to manual choke controlsand more particularly to an automotive accessory to convert an automaticchoke to manual control.

Most automobiles now being sold come equipped with automatic chokeswhich automatically provide a richer gasoline mixture during periods ofstarting the car or while the engine is cold. Such automatic chokes donot always remain satisfactory to the car users many of whom wish toconvert to a mechanical choke control. This conversion in the past hasentailed either a complete new carburetor or a make-shift mechanicalcontrol.

It is an object of the present invention to provide a mechanicalactuator for an automatic choke carburetor.

Another object is to provide a mechanical actuator for an automaticchoke carburetor which will insure positive actuation of the chokevalve.

A further object is to provide a manual choke actuator which will besimple to manufacture and cheap to install.

A still further object is to provide a manual control for an automaticchoke carburetor which will enable the choke to be controlled from thedashboard.

Still further objects of the invention will become apparent from thefollowing specification, which, when taken in conjunction with theaccompanying drawings illustrates a preferred form of the invention.

In the drawings:

Fig. 1 is an elevational view of the face of a choke control embodyingthe invention and showing also adjacent parts of the carburetor; and

Fig. 2 is a cross-section taken on the line 22 of Fig. 1, looking in thedirection of the arrows.

Referring to the drawings, the carburetor casing contains a throttlevalve controlled by a throttle lever 12. The throttle lever 12 iscontrolled from within the car by the foot throttle so that depressingthe foot throttle rotates the lever 12 to increase the speed of the car.

A Venturi throat 14 leads to a butterfly choke valve 15.

The choke valve 15 is mounted on a rod 16, which rod is rotatablysupported in the casing 10 of the carburetor so that rotation of the rod16 rotates the valve 15 to vary the opening through the carburetor. Therotation of the rod 16 is controlled by a lever 18 fixed on the end ofthe rod.

The lever 18 is mounted in a cup-shaped housing 20 and has an outturnedfinger 22 atits outer end which extends parallel to the rod 16 andextends beyond the rim of the housing 20.

When the automobile comes from the factory it ordinarily has anautomatic choke control mounted on the rim of the housing 20, whichautomatically adjusts the setting of the valve 15 in accordance with theneed of the engine. Since many motorists have found such automaticchokes undesirable the present manual control has been designed toreplace the automatic control.

The manual control comprises a disc 25 which is clamped onto the rim ofthe housing 20 by a pair of ICC 2 fingers 27-27 held to the carburetorcasing 10 by screws 2828.

The disc 25 has an arcuate slot 30 cut therethroug h adjacent its upperend to receive the outstanding finger 22 of the lever 18;

The-disc 25-has'a'1ever"32"pivotally mounted at the center of 'the' disc25-ona rivet 33: The upper end of the lever 32 has an aperture 35 whichreceives the outer end of the finger 22 of the lever 18.

The lower end of the lever 32 has an end portion 36 offset sufficientlyto clear a bar 38 which bar is secured to the disc 25. The offsetportion 36 of the lever 32 receives a binding post 39 which is pivotallymounted thereon.

The binding post 39 has an aperture therethrough which receives the endof a control wire 40, the control wire being held in the binding post 39by a screw 42.

The control wire 40 is encased in a cable 45 which extends between thedashboard 46 of the car and the carburetor 10. The cable 45 is securedto the outer end of the bar 33 by a clamp 48. The other end of the cableis secured under the dashboard 46 by a nut 50.

The wire 41 extends through the cable 45 and terminates in a knob 53 onthe face of the dashboard 46.

Operation In operation, when it is desired to enrich the mixture, theknob 53 may be pulled out from the dashboard rotating the lever 32.Rotation of the lever 32 causes a corresponding rotation of the lever 13opening the choke valve 15 and enriching the mixture. The wire 40maintains the valve 15 in the adjusted position.

It will be realized that the hereinbefore described form of theinvention is to be taken merely as a preferred embodiment thereof andthat variously changes in size, shape and arrangement of parts may bemade without departing from the spirit of the invention or the scope ofthe subjoined claims.

That which is claimed as new and is desired to be secured by UnitedStates Letters Patent is:

1. In a carburetor having a casing, an actuating lever including afinger projecting from said casing, a manual control for said levercomprising a plate having an arcuate aperture through which said fingerextends, means to secure the plate on the exterior of said casing, asecond lever pivotally secured to said plate with one end of said secondlever engageable with the finger, a control cable secured to the plateand a control wire movable through said cable and secured to said secondlever to actuate the control lever.

2. In a carburetor having a casing, an actuating lever on the exteriorof the casing and an outstanding finger on said lever, a manual controlfor said lever comprising a plate having an arcuate aperturetherethrough, means to secure the plate on the exterior of said casing,a second lever pivotally secured to said plate with a hole in one end ofsaid second lever engageable over the finger, a binding post pivotallysecured to said second lever, a control wire secured to said bindingpost to actuate the first named lever and a control cable receiving saidwire to guide the same.

3. In a carburetor having a casing, a lever on the exterior of thecasing andan outstanding finger on said lever, a manual control for saidlever comprising a plate having an aperture therein through which thefinger projects, means to secure the plate on the exterior of saidcasing, a second lever pivotally secured to said plate with a hole inone end of said second lever engageable over the finger, a binding postpivotally secured to the end of said second lever opposite said finger,a control wire secured to said binding post to actuate the first namedPatented Mar. 13, 1956 lever and a control cable receiving said wire toguide the same.

References Cited in he file of this patent UNITED STATES PATENTSWeinberg Oct. 6, 1936 10 4 Wirth et a1. Dec. 22, 1936 OConnor Oct. 19,1937 Kalbreier May 17, 1938 Van Horn Feb. 27, 1945 Moore Dec. 4, 1951Moore Oct. 7, 1952 FOREIGN PATENTS Great Britain Apr. 12, 1950

